namespace Svrnty.CQRS.Notifications.Abstractions;

/// <summary>
/// Marks a record as a streaming notification that can be subscribed to via gRPC.
/// The framework will auto-generate proto definitions and service implementations.
/// </summary>
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
public sealed class StreamingNotificationAttribute : Attribute
{
    /// <summary>
    /// The property name used as the subscription key.
    /// Subscribers filter notifications by this value.
    /// </summary>
    public required string SubscriptionKey { get; set; }
}